On 2014-06-23, Karl Schultheisz <art.live...@gmail.com> wrote: > Sorry, I haven't. I don't know how. well, this is actually easy to fix, as no recompilation of Sage is needed here: the only change is in src/sage/intefaces/maxima_lib.py
http://git.sagemath.org/sage.git/diff/src/sage/interfaces/maxima_lib.py?id=3e25c1357e6ecc551afe3e27633fdbbd01982708 if you have Sage installed locally, know how to use git then you can get this patch applied and then run `sage -b`. In case you do not know anything about git, you can still get a copy of the updated file from here: http://git.sagemath.org/sage.git/plain/src/sage/interfaces/maxima_lib.py save it as SAGE_ROOT/src/sage/intefaces/maxima_lib.py and then run `sage -b`. HTH, Dmitrii > > On Monday, June 23, 2014 8:38:46 AM UTC-4, Dima Pasechnik wrote: >> >> On 2014-06-23, Karl Schultheisz <art.l...@gmail.com <javascript:>> wrote: >> > I'm using Sage 6.2 on Arch Linux. I have posted before about sums being >> > wrong >> ><https://groups.google.com/d/msg/sage-support/IgC78rcdO7c/qTWzpA9f-P8J>, >> > and I am happy to see that the community took action. Thanks! I have >> been >> > seeing other errors that may or may not be related to those addressed in >> > the link above. >> > >> > I open a new Sage session (command line). The following code ought to >> > return (e^x - 1)/x. >> > >> > sage: k = var('k') >> > sage: sum(x^k/factorial(k+1),k,0,oo) >> > 1/4*sqrt(pi)*sqrt(x)*e^(1/2*x) >> > >> > This looks similar to the sort of nonsense it was spitting out when >> misinterpreting >> > Bessel functions from Maxima <http://trac.sagemath.org/ticket/16224>. >> In >> > the same session, if I run the summation command again, the result is >> >> did you try applying the patch from #16224 ? >> >> > different. >> > >> > sage: sum(x^k/factorial(k+1),k,0,oo) >> > sum(x^k/factorial(k + 1), k, 0, +Infinity) >> > >> > And after this it will not simplify any sums, even ones it would have >> done >> > correctly on the first try: >> > >> > sage: sum(x^k/factorial(k),k,0,oo) >> > sum(x^k/factorial(k), k, 0, +Infinity) >> > >> > Even a reset doesn't help. (As a side-note, the exit command doesn't >> > survive reset.) >> > >> > sage: reset() >> > sage: k = var('k') >> > sage: sum(x^k/factorial(k),k,0,oo) >> > sum(x^k/factorial(k), k, 0, +Infinity) >> > sage: exit >> > >> > >> --------------------------------------------------------------------------- >> > NameError Traceback (most recent >> call >> > last) >> > /opt/sage/local/lib/python2.7/site-packages/sage/all_cmdline.py in >> ><module>() >> > ----> 1 exit >> > >> > NameError: name 'exit' is not defined >> > >> > Finite sums seem to be ok. >> > >> > sage: sum(x^k,k,0,3) >> > x^3 + x^2 + x + 1 >> > sage: m = var('m') >> > sage: sum(x^k,k,0,m) >> > (x^(m + 1) - 1)/(x - 1) >> > >> > Any help is greatly appreciated. >> > >> >> > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
